It is possible to import tick data. You can import tick data from DukasCopy. Please see how it works here: Importing JForex Data
You probably want to improve the backtest correctness by doing that, however we specially designed the products to provide reliable backtest on real market data from the brokers our traders trade at.
As you know MetaTrader provides only bar data and we invented backtesting algorithms to make reliable backtest using bar data.